The NS, or Name Server records of a domain, point out which servers deal with the Domain Name System (DNS) records for it. Setting the name servers of a particular host company for your domain name is the easiest way to point it to their system and all its sub-records will be taken care of on their end. This includes A (the IP address of the server/website), MX (mail server), TXT (free text), SRV (services), CNAME (forwarding), and so forth, if you need to modify some of these records, you will be able to do it using their system. In other words, the NS records of a domain name reveal the DNS servers that are authoritative for it, so when you attempt to open a web address, the DNS servers are contacted to get the DNS records of the Internet domain you are attempting to access. This way the web site you will see is going to be retrieved from the right location. The name servers typically have a prefix “ns” or “dns” and each and every domain has at least two NS records. There is absolutely no functional difference between the two prefixes, so what kind a hosting provider will use depends entirely on their preference.